201856-53-3 Usage
Uses
(3R,4S)-1-Benzoyl-3-(1-ethoxyethoxy)-4-phenyl-2-azetidinone is an investigational intermediate chemical for Paclitaxel and Docetaxel.
Check Digit Verification of cas no
The CAS Registry Mumber 201856-53-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,8,5 and 6 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 201856-53:
(8*2)+(7*0)+(6*1)+(5*8)+(4*5)+(3*6)+(2*5)+(1*3)=113
113 % 10 = 3
So 201856-53-3 is a valid CAS Registry Number.
InChI:InChI=1/C20H21NO4/c1-3-24-14(2)25-18-17(15-10-6-4-7-11-15)21(20(18)23)19(22)16-12-8-5-9-13-16/h4-14,17-18H,3H2,1-2H3/t14?,17-,18+/m0/s1
201856-53-3Relevant articles and documents
Method for preparation of taxol using an oxazinone
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, (2008/06/13)
Process for the preparation of a taxol intermediate comprising contacting an alcohol with an oxazinone having the formula: STR1 wherein R1 is aryl, heteroaryl, alkyl, alkenyl, alkynyl or OR7 wherein R7 is alkyl, alkenyl, a
Method for preparation of taxol using β-lactam
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, (2008/06/13)
A β-lactam of the formula: STR1 wherein R1 is aryl, substituted aryl, alkyl, alkenyl, or alkynyl; R2 is hydrogen, alkyl, acyl, acetal, ethoxyethyl, or other hydroxyl protecting group; and R3 is aryl, substituted aryl, alky